I guess this happens because duff's code have properly ordered array of probabilities, but origCode does not.

UPDATE: yes I am right

my @array = () x 100;
cmpthese( 10000000,
          {head => sub{$array[0]},
          tail => sub{$array[99]}}
        );

          Rate tail head
tail 4992511/s   --  -3%
head 5149331/s   3%   --

[download]

UPDATE: no, I am wrong. In both the cases the order doesn't matter, sorry

In reply to Re^7: $str to %hash to @ary by ccn
in thread $str to %hash to @ary by abaxaba

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